#999EB0
Closest named color: Bluey Grey (#89A0B0). oklch(70.1% 0.027 273.3), rgb(153, 158, 176).
Aa
Black text reads best on this color (7.87:1).
About this color
#999EB0 is a medium-light close to neutral grey. In OKLCH its lightness is 70%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Bluey Grey (#89A0B0), ΔE 0.022 away. Black text reads best on it, at 7.87:1.
| Hue family | Neutrals |
| Lightness | medium-light (70%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Bluey Grey (#89A0B0) |
| Black text | 7.87:1 |
| White text | 2.66:1 |
Values
| HEX | #999EB0 |
| RGB | rgb(153, 158, 176) |
| HSL | hsl(227, 13%, 65%) |
| OKLCH | oklch(70.1% 0.027 273.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #999EB0 | 2.66:1 | Fails | Lc -57.1 | Large or bold text, headings |
| Black text on #999EB0 | 7.87:1 | AAA | Lc 52.1 | Large or bold text, headings |
| #999EB0 text on white | 2.66:1 | Fails | Lc 51.9 | Large or bold text, headings |
| #999EB0 text on black | 7.87:1 | AAA | Lc -50.0 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9EAED
oklch(93.7% 0.004 271.4)
-
Step 200
200
#D7D9DF
oklch(88.6% 0.008 271.3)
-
Step 300
300
#BDC0CC
oklch(80.9% 0.017 274.8)
-
Step 400
400 (this color)
#999EB0
oklch(70.1% 0.027 273.3)
-
Step 500
500
#82889F
oklch(63% 0.035 273.8)
-
Step 600
600
#6C728A
oklch(55.6% 0.038 274.1)
-
Step 700
700
#5A6075
oklch(49.2% 0.034 272.6)
-
Step 800
800
#4A4E5F
oklch(42.7% 0.029 274.7)
-
Step 900
900
#3E414E
oklch(37.8% 0.023 275)
-
Step 950
950
#24262E
oklch(27% 0.015 274.3)
#999EB0 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #999FB1 | 0.003 |
| Deuteranopia (no green cones) | #989EB0 | 0.001 |
| Tritanopia (no blue cones) | #94A1A4 | 0.023 |
| Achromatopsia (no color) | #9E9E9E | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #999EB0
#999EB0
oklch(70.1% 0.027 273.3)
- #A49F8C
#A49F8C
oklch(70.1% 0.028 94.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #999EB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Grey #89A0B0 ΔE 0.022
- Cool Gray #8D99AE ΔE 0.023
- Cool Steel #97A7B3 ΔE 0.024
- Cool Grey #95A3A6 ΔE 0.024
- Bluegrey #85A3B2 ΔE 0.028
- Pewter #96A8A1 ΔE 0.041
- Greyblue #77A1B5 ΔE 0.043
- Dark Gray #A9A9A9 ΔE 0.043
Use #999EB0 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.